From 82c959ef9124cf7b5c7289fc443e8f827dbb8233 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Wed, 1 Jun 2011 08:58:02 +0000 Subject: add usage() --- spectrogram.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'spectrogram.c') diff --git a/spectrogram.c b/spectrogram.c index e7276d2..609f54d 100644 --- a/spectrogram.c +++ b/spectrogram.c @@ -290,6 +290,16 @@ catch(int notused) die = 1; } +__dead void +usage(void) +{ + extern char *__progname; + + (void)fprintf(stderr, "usage: %s [-h ] [-w ] [-l] [-r]\n", + __progname); + exit(1); +} + int main(int argc, char **argv) { @@ -335,6 +345,7 @@ main(int argc, char **argv) flip_right ^= 1; break; default: + usage(); break; } -- cgit v1.2.3